Metal container



April 17, 1928.

w. W. HODGSON IIETAL CONTAINER Filed March 15. 1927IIIIIIIIIIIIIIIIIIIIIIIIIIII IIIIIIIIIIIIJIIIIIIII it Haw Patented Apr.17, 1928.

UNITED STATES PATENT OFFICE.

WILLIAM w. nonesoN, or CHICAGO, ILLINOIS, assmNon TO CONTINENTAL CAN M-PANY, INC., or NEW YORK, N. Y., A coRronA'rIoN or NEW YQRK.

Maren coNramnn.

Application filed March 15, 1927. Serial No. 175,494.

The invention relates to new and useful improvements in metalcontainers, and more particularly a metal container wherein, one end ishermetically secured to the body portion of the container by a sealingmember thatcan be easily ruptured and removed.

An object of the invention is to provide a container of the above typewherein the outer portion of the flange on the can end is w foldedunderneath and against the under surface of the flange and extendsacross and is shaped to conform to the rolled flange on the body portionof the container, whereby the spring of the metal in the folded back 1portion of the flange aids in the securing of a tight seal.

In the drawings Figure 1 is a sectional view through a sealed containerembodying the improve- 2" ments, and

Fig. 2 is an enlarged sectional View of the parts of the containerseparated from each other and prior to the rolling of the flange on thesealing ring into sealing engagement with the body portion of thecontainer.

The invention is directed to a container of the type shown in the patentgranted Messrs. Coyle & Taliaferro, J anuaryfl, 1925, No. 1,521,599. Thecontainer consists of a body portion having a rolledflange which ispreferably hollow so as to be slightly resilient. The can end forclosing the body portion is provided with a depending portion which isadapted to frictionally engage the inner wall of the body portion. Saidend is also provided with a flange which extends over the flange on thebody portion and the outer portion of this flange on the end is foldedunderneath and against the under face of the flange on the can end. Thisunderneath folded portion extends all the way across the rolled flangeon the body portion and is shaped to conform to said flange on the bodyportion. The sealing material is placed between this folded back portionof the flange on the end and the rolled portion on the body. When thesealing ring is placed about the flanges, it will .bind the metal partsin tight sealing engagement with each other.

Referring more in detail to the drawings, my improved container consistsof a body portion 1 having an outwardly rolled flange 2 which ispreferably'hollow. Thecan end 3 is provided with-a depending portion 4which is adapted to frictionally engage the Inner wall 5 of the bodyportion of the container. Said end has an outwardly extending flange 6which overlies the rolled flange on the can body. -This outwardlyextending flange'on the can end is folded under-v neath as indicated at7 and against the under face of the flange. The portion 7 ex tends allthe way across the rolled flange 2 and is curved to conform to thecurvature of the rolled flange. The sealing material 8 for sealing thecontainer is applied to the under face of this portion 7 and liesbetween this portion 7 and the outer upper face of the rolled flange 2.The end is secured to the container for sealing the same by an integralsealing ring having a substantially horizontal portion 9 formed with avertical depending wall 10. The sealing ring is provided with aninwardly projecting member 11, which may be used for rupturing thesealing ring. The can end is placed on the container body, after whichthe sealing ring is placed on the flanges, and the lower portion 12 ofthe vertical wall 10 is rolled underneath the hollow flange 2. Thesealing ring is pressed down on to the can end and the can end and bodyportion held in tight contact with each other when the seaming tool isapplied to the lower portion of the sealing ring for'rolling the sameunderneath the hollow flange on the container body.

The portion 7 is turned underneath the flange on the can end ip theforming of the .can end, which, of course, is accomplished on a dieress. There is always a certain amount 0 spring back in the metal, sothat there is a tendency of the portion 7 to sprin away slightly fromthe underneath face 0 the flange 6. Likewise. there is a slight flexingof the circular outside sealing rin when the parts are released from theto ls operating thereon. Inasmuch as the sealing material is on theunder face of this portion 7, and between the same and the hollow beadon the container body, this slight springing away of the turnedunderneath portion on the can end will force the same into contact withthe sealing material and the sealing material into contact with thehollow bead on the container body throughout the entire extent thereof.This aids in the maintaining of a very tight seal, so that the contentsof the container may be put up under considerable pressure, orconsiderable vacuum, if desired, without there being any leaks.

Having thus described the invention, what I claim as new and desire tosecure by Letters-Patent, is

A. sealed metal container comprising a body portion having an outwardlyrolled flange, an end having a depending portion adapted to frictionallyengage the inner wall of the body portion and an outwardly extendingflange overlying theflange on said body portion,-the outer portion ofsaid flange on the end being folded underneath and against the underface of the flange, said underneath portion extending across and beingshaped to conform to and engage the rolled flange on the body portion,said underneath portion terminating at said depending portion on theend, a sealing material located between the underneath portion and therolled flange on the containerbody, and a sealing ring having a portionadapted to overlie the flange on the end, a portion extending downwardlyacross the edges of the flanges on the end and body portion of thecontainer, and adapted to be turned under and against the lower portionof the flange .,0n the container body so as to grip and hold saidflanges in tight sealed contact, and means whereby said sealing ring maybe torn across to release the same from the container.

In testimony whereof, I a ffix my signa= ture.

WILLIAM W. HODGSON.

